<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>simple todo edit</title>
</head>
<body>
    <form action="/update" method="post">
        <input name="id" value="{{todo.id}}" type="hidden">
        <input name="task" value="{{todo.task}}">
        <button>提交修改</button>
    </form>
</body>
</html>